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php生成图片缩略图的方法_PHP教程

程序员文章站 2022-05-23 20:40:24
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php生成图片缩略图的方法

具体如下:

这里需要用到GD2 library

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function make_thumb($src,$dest,$desired_width)

{

/* read the source image */

$source_image = imagecreatefromjpeg($src);

$width = imagesx($source_image);

$height = imagesy($source_image);

/* find the "desired height" of this thumbnail, relative to the desired width */

$desired_height = floor($height*($desired_width/$width));

/* create a new, "virtual" image */

$virtual_image = imagecreatetruecolor($desired_width,$desired_height);

/* copy source image at a resized size */

imagecopyresized($virtual_image,$source_image,0,0,0,0,$desired_width,$desired_height,$width,$height);

/* create the physical thumbnail image to its destination */

imagejpeg($virtual_image,$dest, 83);

}

www.bkjia.comtruehttp://www.bkjia.com/PHPjc/980112.htmlTechArticlephp生成图片缩略图的方法 具体如下: 这里需要用到GD2 library 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 function make_thumb($src,$dest,$desired_width) { /* read the...